Since you are EXP/OW Emerald, be sure to use the F check-in desk if originating in HKG-the only place I've ever seen a porter to carry/weigh/tag both checked and carried on bags. The Pier F Lounge entrance is the same level as immigration after clearly security and has Cabanas which the Wing F Lounge does not. Each Cabana has bathroom, shower, large soaking tub and a terrace with a flat lounge cot and traditional lounge chair.

I'd take advantage of the Cabana to start the long flight freshly showered.